Method and device for cryptographic processing of data
US11477023B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2018 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jul 24, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for cryptographic processing includes: storing an initial value as the current value; implementing a predetermined number of first steps, including one involving obtaining second data by applying a first cryptographic algorithm to first data, the others each involving the application of the first cryptographic algorithm to the current value and the storage of the result as the new current value; implementation of the predetermined number of second steps, including one involving the obtaining of fourth data by applying, to third data, a second cryptographic algorithm that is the inverse of the first cryptographic algorithm, the others each involving the application of the second cryptographic algorithm to the current value and the storage of the result as the new current value; and verification of the equality of the first data and the fourth data, and of the equality of the current value and the initial value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.